Rootkit

dilfonseca

Prezad@s,

Minha máquina apresentou um comportamento estranho depois que acessei um site de downloads.
Antes quando abria a pasta "Arquivos" apareciam só as pastas Área de Trabalho, Desktop, Documentos, Downloads, Dropbox, imagens, Músicas, Vídeos e Público. Agora porém toda vez que abro a pasta dentro dela vem também uma série de pastas que parecem ligadas ao sistema que não abriam antes tais como :.adobe, .cache, .config, .dbus, e outras.
Desconfiado rodei o Rkhunter qu deu o seguinte log final:
System checks summary
=====================

File properties checks...
Files checked: 135
Suspect files: 3

Rootkit checks...
Rootkits checked : 292
Possible rootkits: 0

Applications checks...
All checks skipped

The system checks took: 4 minutes and 53 seconds

All results have been written to the log file (/var/log/rkhunter.log)

One or more warnings have been found while checking the system.
Please check the log file (/var/log/rkhunter.log)

Na dúvida, rodei também o chkrootkit, que apresentou o seguinte um Ítem como INFECTED
(Searching for Suckit rootkit... Warning: /sbin/init INFECTED), vejam o log:

~ $ sudo chkrootkit
ROOTDIR is `/'
Checking `amd'... not found
Checking `basename'... not infected
Checking `biff'... not found
Checking `chfn'... not infected
Checking `chsh'... not infected
Checking `cron'... not infected
Checking `crontab'... not infected
Checking `date'... not infected
Checking `du'... not infected
Checking `dirname'... not infected
Checking `echo'... not infected
Checking `egrep'... not infected
Checking `env'... not infected
Checking `find'... not infected
Checking `fingerd'... not found
Checking `gpm'... not found
Checking `grep'... not infected
Checking `hdparm'... not infected
Checking `su'... not infected
Checking `ifconfig'... not infected
Checking `inetd'... not infected
Checking `inetdconf'... not found
Checking `identd'... not found
Checking `init'... not infected
Checking `killall'... not infected
Checking `ldsopreload'... not infected
Checking `login'... not infected
Checking `ls'... not infected
Checking `lsof'... not infected
Checking `mail'... not found
Checking `mingetty'... not found
Checking `netstat'... not infected
Checking `named'... not found
Checking `passwd'... not infected
Checking `pidof'... not infected
Checking `pop2'... not found
Checking `pop3'... not found
Checking `ps'... not infected
Checking `pstree'... not infected
Checking `rpcinfo'... not found
Checking `rlogind'... not found
Checking `rshd'... not found
Checking `slogin'... not infected
Checking `sendmail'... not found
Checking `sshd'... not found
Checking `syslogd'... not tested
Checking `tar'... not infected
Checking `tcpd'... not infected
Checking `tcpdump'... not infected
Checking `top'... not infected
Checking `telnetd'... not found
Checking `timed'... not found
Checking `traceroute'... not found
Checking `vdir'... not infected
Checking `w'... not infected
Checking `write'... not infected
Checking `aliens'... no suspect files
Searching for sniffer's logs, it may take a while... nothing found
Searching for rootkit HiDrootkit's default files... nothing found
Searching for rootkit t0rn's default files... nothing found
Searching for t0rn's v8 defaults... nothing found
Searching for rootkit Lion's default files... nothing found
Searching for rootkit RSHA's default files... nothing found
Searching for rootkit RH-Sharpe's default files... nothing found
Searching for Ambient's rootkit (ark) default files and dirs... nothing found
Searching for suspicious files and dirs, it may take a while... The following suspicious files and directories were found:
/usr/lib/python2.7/dist-packages/PyQt4/uic/widget-plugins/.noinit /usr/lib/jvm/.java-1.7.0-openjdk-amd64.jinfo /usr/lib/pymodules/python2.7/.path

Searching for LPD Worm files and dirs... nothing found
Searching for Ramen Worm files and dirs... nothing found
Searching for Maniac files and dirs... nothing found
Searching for RK17 files and dirs... nothing found
Searching for Ducoci rootkit... nothing found
Searching for Adore Worm... nothing found
Searching for ShitC Worm... nothing found
Searching for Omega Worm... nothing found
Searching for Sadmind/IIS Worm... nothing found
Searching for MonKit... nothing found
Searching for Showtee... nothing found
Searching for OpticKit... nothing found
Searching for T.R.K... nothing found
Searching for Mithra... nothing found
Searching for LOC rootkit... nothing found
Searching for Romanian rootkit... nothing found
Searching for Suckit rootkit... Warning: /sbin/init INFECTED
Searching for Volc rootkit... nothing found
Searching for Gold2 rootkit... nothing found
Searching for TC2 Worm default files and dirs... nothing found
Searching for Anonoying rootkit default files and dirs... nothing found
Searching for ZK rootkit default files and dirs... nothing found
Searching for ShKit rootkit default files and dirs... nothing found
Searching for AjaKit rootkit default files and dirs... nothing found
Searching for zaRwT rootkit default files and dirs... nothing found
Searching for Madalin rootkit default files... nothing found
Searching for Fu rootkit default files... nothing found
Searching for ESRK rootkit default files... nothing found
Searching for rootedoor... nothing found
Searching for ENYELKM rootkit default files... nothing found
Searching for common ssh-scanners default files... nothing found
Searching for suspect PHP files... nothing found
Searching for anomalies in shell history files... nothing found
Checking `asp'... not infected
Checking `bindshell'... not infected
Checking `lkm'... chkproc: nothing detected
chkdirs: nothing detected
Checking `rexedcs'... not found
Checking `sniffer'... lo: not promisc and no packet sniffer sockets
wlan0: PACKET SNIFFER(/sbin/wpa_supplicant[978], /sbin/dhclient[1058])
Checking `w55808'... not infected
Checking `wted'... 4 deletion(s) between Mon Mar 9 23:46:13 2015 and Tue Mar 10 14:27:42 2015
Checking `scalper'... not infected
Checking `slapper'... not infected
Checking `z2'... user dil deleted or never logged from lastlog!
Checking `chkutmp'... chkutmp: nothing deleted
Checking `OSX_RSPLUG'... not infected

Agora a duvida: o que fazer? Estou infectado? Se estiver, o que devo fazer?

Abraços
Dil

Alquintela

Oi Dil,

não sei dizer se você está infectado, mas as pastas iniciadas por . (ponto) são pastas ocultas do sistema as quais você passou a ver devido a opção mostrar pastas ocultas estar ativada. O comando Ctrl+H irá ocultar novamente

visterine

Instala o ClamTK e manda fazer uma varredura.

No terminal:
[b]sudo apt-get install clamtk
sudo freshclam[/b]

Abra o Clamtk pelo Mint Menu e faça a varredura.